/Engine/Source/Editor/SkeletonEditor/Public/ISkeletonTreeItem.h
The array of children for this item
[TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [ISkeletonTreeItem](API\Editor\SkeletonEditor\ISkeletonTreeItem) > > & GetChildren()